diff --git a/IDE/src/ui/SourceViewPanel.bf b/IDE/src/ui/SourceViewPanel.bf
index 720601ee..c179b491 100644
--- a/IDE/src/ui/SourceViewPanel.bf
+++ b/IDE/src/ui/SourceViewPanel.bf
@@ -3691,7 +3691,7 @@ namespace IDE.ui
 			{
 				Debug.Assert(mOldVerLoadExecutionInstance == null);
 				mOldVerLoadExecutionInstance = gApp.DoRun(null, mOldVerLoadCmd, gApp.mInstallDir, .None);
-				mOldVerLoadExecutionInstance.mAutoDelete = false;
+				mOldVerLoadExecutionInstance?.mAutoDelete = false;
 			}
 
 			CloseHeader();